WO2011074372A1 - Needle device - Google Patents
Needle device Download PDFInfo
- Publication number
- WO2011074372A1 WO2011074372A1 PCT/JP2010/070603 JP2010070603W WO2011074372A1 WO 2011074372 A1 WO2011074372 A1 WO 2011074372A1 JP 2010070603 W JP2010070603 W JP 2010070603W WO 2011074372 A1 WO2011074372 A1 WO 2011074372A1
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- WO
- WIPO (PCT)
- Prior art keywords
- inner hub
- hole
- hub
- needle
- opening
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3293—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/344—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
Definitions
- the present invention relates to a needle device including an inner hub in which a needle is integrally provided in a cylindrical main body.
- a soft outer needle can be punctured together with a hard inner needle by puncturing a patient's arm or the like with a hard inner needle protruding from a soft outer needle. Thereafter, by pulling the hard inner needle into the cylindrical main body, only the soft outer needle can be placed in the puncture portion. Thereby, even when the patient moves, the pain at the puncture portion can be relieved, and damage to the blood vessel can be prevented.
- the hard inner needle is integrated with the inner hub to which the tube is connected. By pulling the tube, the inner hub moves, and a hard inner needle integrated therewith can be drawn into the cylindrical main body.
- a chemical solution or the like is supplied through a tube into an inner hub connected thereto, and further administered to a patient through a soft outer needle. If there is air in the indwelling needle device at the time of administration of the drug solution, the air enters the blood vessel together with the drug solution.
- priming is performed in which the indwelling needle device is filled with a liquid such as physiological saline or nutrient in advance.
- JP 2006-297062 A Republished WO2007 / 083770
- the liquid injected into the indwelling needle device is discharged through the inner hub.
- the injected liquid once flows into the inner hub, flows out from a hole formed in the inner hub, passes through a gap between the outer peripheral surface of the inner hub and the cylindrical main body, and then enters the inner needle.
- the liquid did not spread sufficiently on the outer peripheral surface of the inner hub, and bubbles remained on the outer peripheral surface of the inner hub.
- the present invention solves the conventional problems as described above, and an object of the present invention is to provide a needle device that can prevent air bubbles from staying on the outer peripheral surface of the inner hub.
- the first needle device of the present invention includes an inner hub having a needle attached to the tip and a cylindrical main body in which the inner hub is housed.
- the inner hub includes a through hole penetrating in the radial direction of the inner hub, and a recess formed in an outer peripheral surface of the inner hub. In the circumferential direction of the inner hub, the opening of the through hole and the recess are connected.
- the second needle device of the present invention includes an inner hub having a needle attached to the tip, and a cylindrical main body in which the inner hub is housed.
- the inner hub includes a through hole penetrating in the radial direction of the inner hub, and a protrusion formed between the opening of the through hole and the tip of the inner hub and protruding from the outer peripheral surface of the inner hub.
- FIG. 1 is an external perspective view of an indwelling needle device 1A according to Embodiment 1 of the present invention.
- FIG. 2 is a longitudinal sectional view of the indwelling needle device 1A shown in FIG. 3 is an enlarged view of the distal end side of the indwelling needle device 1A shown in FIG. 4 is a cross-sectional view showing a state in which the inner needle 8 is drawn into the shield tube 4 from the state of FIG.
- FIG. 5 is an enlarged sectional view in the vicinity of the inner hub 9 according to the first embodiment of the present invention, and is an enlarged sectional view in the penetration direction of the through hole 22 of the inner hub 9.
- FIG. 2 is a longitudinal sectional view of the indwelling needle device 1A shown in FIG. 3 is an enlarged view of the distal end side of the indwelling needle device 1A shown in FIG. 4 is a cross-sectional view showing a state in which the inner needle 8 is drawn into the shield tube 4 from the state of FIG.
- FIG. 6 is an enlarged cross-sectional view in the vicinity of the inner hub 9 according to the first embodiment of the present invention, and is an enlarged cross-sectional view in the radial direction of the through hole 22 of the inner hub 9.
- FIG. 7 is an enlarged perspective view of the inner hub 9 according to the first embodiment of the present invention.
- FIG. 8 is an enlarged perspective view of the inner hub 100 according to the comparative example.
- FIG. 9 is an enlarged perspective view of the inner hub 40 according to the second example of the first embodiment of the present invention.
- FIG. 10 is an enlarged perspective view of the inner hub 50 according to the third example of the first embodiment of the present invention.
- FIG. 11 is an enlarged perspective view of the inner hub 60 according to the fourth example of the first embodiment of the present invention.
- FIG. 12 is an external perspective view of an indwelling needle device 1B according to Embodiment 2 of the present invention.
- 13 is a cross-sectional view in the longitudinal direction of the indwelling needle device 1B shown in FIG. 14 is an enlarged view of the distal end side of the indwelling needle device 1B shown in FIG. 15 is a cross-sectional view showing a state in which the inner needle 8 is drawn into the shield tube 4 from the state of FIG.
- FIG. 16 is an enlarged cross-sectional view in the vicinity of the inner hub 9 according to the second embodiment of the present invention, and is an enlarged cross-sectional view in the penetration direction of the through hole 22 of the inner hub 9.
- FIG. 17 is an enlarged sectional view in the vicinity of the inner hub 9 according to the second embodiment of the present invention, and is an enlarged sectional view in the radial direction of the through hole 22 of the inner hub 9.
- FIG. 18 is an enlarged perspective view of the inner hub 9 according to the second embodiment of the present invention.
- FIG. 19 is an enlarged perspective view of the inner hub 200 according to the comparative example.
- FIG. 20 is an enlarged perspective view of the inner hub 40 according to the second example of the embodiment of the present invention.
- the concave portion connected to the opening of the through hole and the circumferential direction of the inner hub is formed on the outer peripheral surface of the inner hub, the flow of the liquid flowing out from the opening of the through hole Is restricted to flow along the recess, and can promote the flow of the liquid traveling in the circumferential direction of the inner hub. This facilitates the discharge of bubbles in the circumferential direction of the inner hub. Therefore, according to the present invention, when liquid is injected into the needle device in the priming operation, air can be reliably replaced with liquid, and bubbles can be prevented from staying on the outer peripheral surface of the inner hub.
- the recess is arranged so as to guide the liquid flowing out from the opening of the through hole in the circumferential direction of the inner hub.
- the opening of the through hole is preferably sandwiched between the recesses. This configuration is advantageous for promoting the discharge of bubbles in the circumferential direction of the inner hub.
- the concave portion is divided at the partition surface, and that the depth of the concave portion becomes shallower from the opening side of the through hole toward the partition surface. According to this configuration, the bubbles run on the partition surface along with the flow of the liquid, and the bubbles easily flow to the front end side of the inner hub, which is advantageous for promoting the discharge of the bubbles.
- the recess includes a portion extending in the axial direction of the inner hub. This configuration is advantageous for promoting the discharge of bubbles in the axial direction of the inner hub.
- the width of the concave portion is 1 ⁇ 2 or less of the length of the opening of the through hole. According to this configuration, the liquid flow can be concentrated on the portion where the bubbles are likely to stay, which is advantageous for discharging the bubbles.
- the liquid flowing out from the opening of the through hole formed in the inner hub is diverted to both sides of the protrusion, and the periphery of the inner hub is It is possible to promote the flow of liquid traveling in the direction. This facilitates the discharge of bubbles in the circumferential direction of the inner hub. Therefore, according to the present invention, when liquid is injected into the needle device in the priming operation, air can be reliably replaced with liquid, and bubbles can be prevented from staying on the outer peripheral surface of the inner hub.
- the inner hub is provided with a concave portion in which an outer peripheral surface of the inner hub is recessed, and the protrusion protrudes from the concave portion. According to this configuration, the protrusion can be formed while maintaining the outer diameter of the inner hub.
- the protrusion is arranged so as to guide the liquid flowing out from the opening of the through hole in the circumferential direction of the inner hub.
- the wall surface of the protrusion and the opening of the through hole face each other when the protrusion is viewed in plan. According to this configuration, the flow of the liquid flowing out from the through hole is restricted by the wall surface of the protrusion, and a flow that is divided on both sides of the protrusion is generated, so that the flow of the liquid traveling in the circumferential direction of the inner hub is promoted.
- the opening of the through hole is preferably sandwiched between the recesses.
- the concave portion serves as a groove for guiding the liquid flow in the circumferential direction of the inner hub, which is advantageous for promoting the flow of the liquid traveling in the circumferential direction of the inner hub.
- the dimension of the gap between the protrusion and the opening of the through hole is such that the opening of the through hole and the tip of the inner hub are It is preferable that it is 1/2 or less of the shortest distance between. According to this configuration, the liquid easily spreads from the through hole of the inner hub in the circumferential direction of the inner hub, which is advantageous for discharging bubbles.
- the side surfaces on both sides of the projection are preferably arranged in a V shape, and the width of the projection is preferably widened toward the through hole. According to this configuration, since the tip of the protrusion has a sharp shape, it is possible to prevent bubbles from staying at the tip of the protrusion.
- the present invention relates to a needle device.
- the needle device of the present invention will be described using an example of a medical indwelling needle device in which a needle portion has a double structure of an outer needle and an inner needle.
- Such an indwelling needle device is used at the time of infusion or blood transfusion, and can perform infusion or blood transfusion in a state where only a soft outer needle is indwelled at the puncture portion.
- FIG. 1 is an external perspective view of an indwelling needle device 1A according to Embodiment 1 of the present invention.
- FIG. 2 is a longitudinal sectional view of the indwelling needle device 1A shown in FIG. 3 is an enlarged view of the distal end side of the indwelling needle device 1A shown in FIG. 4 is a cross-sectional view showing a state in which the inner needle 8 is drawn into the shield tube 4 from the state of FIG.
- the indwelling needle device 1A includes a cylindrical main body 2 having an outer hub 5 attached to the tip of the shield cylinder 4.
- the main body 2 includes a needle portion 3 (FIG. 2) on the distal end side.
- a cap 6 is attached to the needle portion 3.
- Examples of the material of the shield tube 4 and the outer hub 5 include polycarbonate and polypropylene.
- the needle part 3 has a double structure in which a metal hard inner needle 8 is inserted into a hollow part of a tube-shaped soft outer needle 7.
- the outer needle 7 is fixed to the outer hub 5, and the inner needle 8 is fixed to the inner hub 9.
- Examples of the material of the inner hub 9 include polycarbonate and polypropylene.
- Examples of the material of the outer needle 7 include fluorine resins such as polyurethane elastomers and polytetrafluoroethylene.
- the inner needle 8 is inserted through the hole 27 of the inner hub 9.
- the inner needle 8 can be fixed to the inner hub 9 by applying an adhesive to the end 27 a of the hole 27.
- the inner needle 8 protrudes into the through hole 22. If the protruding amount of the inner needle 8 is set to be sufficiently large, the inner needle 8 can be protruded into the through hole 22 even if the protruding amount of the inner needle 8 varies during manufacturing. For example, as shown in FIGS. 6 and 7 to be described later, the length of the through hole 22 in the axial direction of the inner hub 9 is to ensure the amount of protrusion of the inner needle 8 into the through hole 22. Because.
- the distance between the end portion 27a of the hole 27 and the end portion 8a of the inner needle 8 is secured, so that the adhesive enters the hollow portion of the inner needle 8 and the adhesive plugs the inner needle 8. Can be prevented.
- the inner needle 8 may be fixed to the inner hub 9 without causing the inner needle 8 to protrude into the through hole 22 as in the second embodiment described later.
- the inner hub 9 is housed in the main body 2, and can move in the shield tube 4 in the axial direction of the shield tube 4.
- An O-ring 15 for sealing is attached to the inner hub 9.
- the tube 10 is connected to the tubular portion 20 on the rear end side of the inner hub 9 (see FIG. 5). By pulling the tube 10 in the direction of arrow a, the inner hub 9 moves in the shield cylinder 4 in the direction of arrow a. As a result, the inner needle 8 integrated with the inner hub 9 is pulled into the shield tube 4 as shown in FIG.
- a ring portion 16 is attached to the shield tube 4 so as to wrap around the outer periphery of the shield tube 4.
- a pair of wing parts 17 are provided integrally with the ring part 16.
- a hub movement restricting member 11 is detachably attached to the shield tube 4.
- the hub movement restricting member 11 includes a pair of cantilever portions 12. In FIG. 1, only one of the pair of cantilever portions 12 is shown, but the pair of cantilever portions 12 are arranged so as to sandwich the shield tube 4.
- the hub movement restricting member 11 is integrally provided with a stopper 13.
- the stopper 13 is inserted into the shield tube 4, and the tip 13 a abuts against the rear end surface 9 a of the inner hub 9.
- the soft outer needle 7 is also punctured.
- the gripping of the cantilever 12 is released, and the tube 10 is pulled in the direction of arrow a, whereby the inner needle 8 integrated with the inner hub 9 is shown in FIG. Is drawn into the shield tube 4.
- the soft outer needle 7 can be placed in the puncture portion. Thereby, even when the patient moves, the pain at the puncture portion can be relieved, and damage to the blood vessel can be prevented.
- a liquid such as a chemical solution to be administered to the patient is supplied from the tube 10 into the inner hub 9.
- the inner hub 9 includes a flow path 21 along the axial direction of the inner hub 9 and a through hole 22 penetrating the inner hub 9 in the radial direction.
- the flow path 21 and the through hole 22 are connected.
- the liquid supplied into the inner hub 9 flows out from the inner hub 9 through the flow path 21 and the through hole 22.
- the liquid flowing out from the inner hub 9 passes through the inside of the main body 2 to reach the hollow portion of the outer needle 7 and is administered into the patient's body.
- the indwelling needle device 1A when there is air in the indwelling needle device 1A during administration of a drug solution or the like, the air enters the blood vessel together with the drug solution or the like. For this reason, prior to puncturing, an operation called priming is performed in which the indwelling needle device 1A is preliminarily filled with a liquid such as physiological saline or nutrient.
- FIG. 5 shows an enlarged sectional view of the vicinity of the inner hub 9 in FIG.
- FIG. 5 shows a cross section in the penetration direction of the through hole 22 of the inner hub 9.
- 6 is an enlarged cross-sectional view of the vicinity of the inner hub 9 in a direction orthogonal to the cross-sectional direction of FIG. That is, FIG. 6 shows a cross section in the radial direction of the through hole 22 of the inner hub 9.
- FIG. 7 shows an enlarged perspective view of the inner hub 9.
- Priming operation is performed with the inner needle 8 protruding from the outer needle 7 as shown in FIG.
- a liquid such as physiological saline is supplied from the tube 10 toward the inner hub 9 (in the direction of arrow b).
- the liquid supplied to the inner hub 9 flows into the through hole 22 through the flow path 21.
- a part of the liquid that has flowed into the through hole 22 flows toward the outer peripheral surface side of the inner hub 9, that is, toward the opening side of both ends of the through hole 22 (in the direction of arrow c).
- the liquid that has flowed in the direction of arrow c passes between the outer peripheral surface of the inner hub 9 and the inner peripheral surface of the outer hub 5 and travels toward the tip 26 side of the inner hub 9.
- FIG. 7 shows an enlarged perspective view of the inner hub 9.
- the outer peripheral surface 23 of the inner hub 9 is formed with a concave portion 23a in which the outer peripheral surface 23 is recessed.
- the recess 23 a is connected to the opening of the through hole 22.
- the recess 23 a is formed so as to sandwich the through hole 22 in the circumferential direction of the inner hub 9.
- the recessed part 23a is divided
- the recess 23 a is formed so as to sandwich the through hole 22. Since the recess 23a connected to one opening of the through hole 22 and the recess 23a connected to the other opening of the through hole 22 are divided by the pair of partition surfaces 23b, they are not continuous in the circumferential direction.
- the arrows e, f and g in FIG. 7 indicate the flow direction of the liquid flowing out from the through hole 22.
- both sides of the opening of the through hole 22 in the circumferential direction of the inner hub 9 are connected to the pair of recesses 23a. In the portion where the recess 23a is formed, the liquid flows while being guided by the recess 23a.
- the recess 23a is divided in the circumferential direction with the partition surface 23b as a boundary.
- the depth of the recess 23a becomes shallower from the opening side of the through hole 22 toward the partition surface 23b.
- the partition surface 23b is closer to the inner peripheral surface of the outer hub 5 than the portion where the recess 23a is formed, but is not completely in close contact (see FIG. 6). For this reason, a gap 30 is formed between the partition surface 23 b and the inner peripheral surface of the outer hub 5. Therefore, the liquid flow indicated by the arrow e in FIG. 7 can run on the partition surface 23b. After the liquid rides on the partition surface 23 b, the liquid flows toward the front end 26 side of the inner hub 9 while flowing through the gap 30.
- FIGS. 5 and 6 show the outer peripheral surface 23 of the portion of the inner hub 9 where the recess 23a is not formed.
- the outer peripheral surface 23 of the inner hub 9 shown in FIGS. 5 and 6 is close to the inner peripheral surface of the outer hub 5, but is not completely in close contact therewith. For this reason, a gap 31 is formed between the outer peripheral surface 23 of the inner hub 9 and the inner peripheral surface of the outer hub 5. Accordingly, the liquid indicated by the arrows f and g in FIG. 7 moves toward the tip 26 side of the inner hub 9 while flowing through the gap 31 (FIGS. 5 and 6).
- the liquid flowing out of the through hole 22 proceeds in the axial direction of the inner hub 9 toward the tip 26 side of the inner hub 9 as a whole.
- the flow proceeding in the circumferential direction of the inner hub 9 is also promoted.
- the liquid that has flowed to the tip 26 of the inner hub 9 further moves into the outer needle 7.
- the vicinity of the tip 26 of the inner hub 9 and the inner peripheral surface of the outer hub 5 are not completely in close contact with each other, and a gap 33 is formed between them.
- a gap 34 is also formed between the hole of the outer hub 5 and the inner needle 8.
- a gap 35 is also formed between the inner peripheral surface of the outer needle 7 and the outer peripheral surface of the inner needle 8.
- the liquid flowing through the gap 31 toward the tip 26 of the inner hub 9 flows out from the tip of the outer needle 7 (arrow h) through the gap 33, the gap 34, and the gap 35.
- the liquid traveling in the direction of the arrow d in FIG. 5 flows out from the tip of the inner needle 8 through the hollow portion of the inner needle 8 as indicated by the arrow i in FIG.
- the space and the gap between the through hole 22 and the tips of the inner needle 8 and the outer needle 7 are filled with liquid, and from these spaces and gaps Air is exhausted.
- FIG. 8 is a perspective view of the inner hub 100 according to the comparative example.
- a through hole 102 penetrating in the radial direction is formed on the outer peripheral surface 101 of the inner hub 100 having no irregularities.
- the concave portion 23a is not formed unlike the inner hub 9 shown in FIG.
- the circumferential flow (arrow m) of the inner hub 100 is weak. For this reason, in the circumferential direction of the inner hub 100, the liquid becomes difficult to spread as the distance from the opening of the through hole 102 increases. Therefore, in the circumferential direction of the inner hub 100, bubbles are likely to stay in a portion far from the opening of the through hole 102.
- the liquid flowing out from the opening of the through hole 22 is diverted to both sides in the circumferential direction of the through hole 22 by forming the recess 23a.
- the flow proceeding in the circumferential direction of the hub 9 can be promoted. For this reason, in the circumferential direction of the inner hub 9, discharge of bubbles is promoted even at a portion far from the opening of the through hole 22.
- the depth of the recess 23a becomes shallower from the opening of the through hole 22 toward the partition surface 23b.
- the bubbles run on the partition surface 23b together with the flow of the liquid, and the bubbles easily flow toward the tip 26 side of the inner hub 9. This is also advantageous for promoting the discharge of bubbles.
- the part which becomes shallow as the partition surface 23b is approached may be the entire recessed part 23a or a part of the recessed part 23a.
- the depth of the recess 23a is constant in the region from the opening of the through hole 22 to a certain point in the circumferential direction, and gradually decreases in the region from this point to the partition surface 23 as it approaches the partition surface 23b. May be.
- air can be reliably replaced with liquid by filling the liquid by the priming operation, and bubbles can be prevented from staying on the outer peripheral surface of the inner hub 9.
- the retention of bubbles does not occur in the entire outer peripheral surface of the inner hub 9, but tends to occur selectively in a specific portion. For this reason, forming the recess 23a so as not to be too large so that the liquid flow concentrates on the portion where the bubbles tend to stay is effective in discharging the bubbles.
- the width W of the recess 23 a is preferably equal to or less than 1 ⁇ 2 of the opening length L of the through hole 22. The same applies to the examples shown in FIGS. 9 to 11 below.
- 9 to 11 illustrate one opening side of the through hole 22, the same shape as that illustrated in FIGS. 9 to 11 is formed on the other opening side of the through hole 22.
- FIG. 9 is an enlarged perspective view of the inner hub 40 according to the second example of the first embodiment.
- the recess 23a is divided in the circumferential direction with the partition surface 23b as a boundary, whereas in the inner hub 40 shown in FIG. 9, the portion where the through hole 22 is formed is excluded.
- a recess 23 a is formed over the entire circumference of the inner hub 40.
- FIG. 10 is an enlarged perspective view of the inner hub 50 according to the third example of the first embodiment.
- a concave portion 51a in which the outer peripheral surface 51 is recessed is formed on the outer peripheral surface 51 of the inner hub 50.
- the point which the recessed part 51a of the inner hub 50 contains the part B extended in the axial direction of the inner hub 50 differs from the example shown in the said FIG. 7, FIG.
- a part of the recess 51a is branched by a protrusion 52 protruding from the bottom surface of the recess 51a.
- a portion A of the recess 51a branched by the protrusion 52 is connected to the through hole 22 in the circumferential direction.
- a portion (portion B) of the concave portion 51 a closer to the tip 53 of the inner hub 9 than the portion A is formed to extend in the axial direction of the inner hub 50.
- the liquid flow indicated by the arrows f and g toward the tip 53 side of the inner hub 50 is generated as in the example of FIG.
- a flow (arrows n, p) that proceeds in the circumferential direction of the inner hub 50 occurs.
- the surface of the protrusion 52 and the inner peripheral surface of the outer hub 5 (FIG. 5) are not completely in close contact with each other, and a gap is formed between them. For this reason, a part of the flow (arrow n) traveling in the circumferential direction passes over the protrusion 52 and further proceeds in the circumferential direction.
- the configuration of FIG. 10 is also advantageous for promoting the discharge of bubbles in the axial direction of the inner hub 50.
- FIG. 11 is an enlarged perspective view of the inner hub 60 according to the fourth example of the first embodiment.
- a concave portion 61a in which the outer peripheral surface 61 is recessed is formed on the outer peripheral surface 61 of the inner hub 60.
- the point which the recessed part 61a of the inner hub 60 contains the part B extended in the axial direction of the inner hub 60 is different from the example shown in the said FIG. 7, FIG.
- the opening of the through hole 22 is surrounded by the protrusion 62 except for the portion where the recess 61a is formed.
- the portion A of the recess 61a is connected to the through hole 22 in the circumferential direction.
- a portion (portion B) of the concave portion 61 a closer to the tip 63 of the inner hub 60 than the portion A is formed to extend in the axial direction of the inner hub 60.
- a liquid flow indicated by arrows f and g toward the tip 63 side of the inner hub 60 occurs.
- a flow (arrows n, p) that proceeds in the circumferential direction of the inner hub 50 occurs.
- the outer peripheral surface 61 of the inner hub 60 where the recess 61a is not formed and the inner peripheral surface of the outer hub 5 (FIG. 5) are not completely in close contact with each other, and a gap is formed between them. For this reason, a part of the flow (arrow n) traveling in the circumferential direction gets over the outer surface 61 and further proceeds in the circumferential direction.
- the flow (arrows p, n) that proceeds in the circumferential direction of the inner hub 60 along the recess 61a is promoted and the axial direction of the inner hub 60 is also promoted.
- the forward flow (arrow r) is also promoted.
- the configuration of FIG. 11 is also advantageous for promoting the discharge of bubbles in the axial direction of the inner hub 60.
- the shape of the inner hub is such that the opening of the through hole and the recess are connected in the circumferential direction, and the recess flows the liquid flowing out of the opening of the through hole in the circumferential direction of the inner hub. Any shape that can be guided may be used, and the present invention is not limited to the above-described various examples.
- FIG. 12 is an external perspective view of an indwelling needle device 1B according to Embodiment 2 of the present invention.
- 13 is a cross-sectional view in the longitudinal direction of the indwelling needle device 1B shown in FIG. 14 is an enlarged view of the distal end side of the indwelling needle device 1B shown in FIG. 15 is a cross-sectional view showing a state in which the inner needle 8 is drawn into the shield tube 4 from the state of FIG.
- the indwelling needle device 1B includes a cylindrical main body 2 having an outer hub 5 attached to the tip of the shield cylinder 4.
- the main body 2 includes a needle portion 3 (FIG. 13) on the distal end side.
- a cap 6 is attached to the needle portion 3.
- Examples of the material of the shield tube 4 and the outer hub 5 include polycarbonate and polypropylene.
- the needle portion 3 has a double structure in which a metal hard inner needle 8 is inserted into a hollow portion of a tube-shaped soft outer needle 7.
- the outer needle 7 is fixed to the outer hub 5, and the inner needle 8 is fixed to the inner hub 9.
- Examples of the material of the inner hub 9 include polycarbonate and polypropylene.
- Examples of the material of the outer needle 7 include fluorine resins such as polyurethane elastomers and polytetrafluoroethylene.
- the inner needle 8 does not protrude into the through hole 22, but the inner needle 8 may protrude into the through hole 22 and be fixed to the inner hub 9 as in the first embodiment.
- the inner hub 9 is housed in the main body 2, and can move in the shield tube 4 in the axial direction of the shield tube 4.
- An O-ring 15 for sealing is attached to the inner hub 9.
- the tube 10 is connected to the tubular portion 20 on the rear end side of the inner hub 9 (see FIG. 16). By pulling the tube 10 in the direction of arrow a, the inner hub 9 moves in the shield cylinder 4 in the direction of arrow a. As a result, the inner needle 8 integrated with the inner hub 9 is drawn into the shield tube 4 as shown in FIG.
- a ring portion 16 is attached to the shield tube 4 so as to wrap around the outer periphery of the shield tube 4.
- a pair of wing parts 17 are provided integrally with the ring part 16.
- a hub movement restricting member 11 is detachably attached to the shield tube 4.
- the hub movement restricting member 11 includes a pair of cantilever portions 12. In FIG. 12, only one of the pair of cantilever portions 12 is shown, but the pair of cantilever portions 12 are arranged so as to sandwich the shield tube 4.
- the hub movement restricting member 11 is integrally provided with a stopper 13.
- the stopper 13 is inserted into the shield tube 4, and the tip 13 a abuts against the rear end surface 9 a of the inner hub 9.
- the soft outer needle 7 is also punctured.
- the gripping of the cantilever portion 12 is released, and the tube 10 is pulled in the direction of arrow a, whereby the inner needle 8 integrated with the inner hub 9 as shown in FIG. Is drawn into the shield tube 4.
- the soft outer needle 7 can be placed in the puncture portion.
- the inner hub 9 includes a flow path 21 along the axial direction of the inner hub 9 and a through hole 22 penetrating the inner hub 9 in the radial direction.
- the flow path 21 and the through hole 22 are connected.
- the liquid supplied into the inner hub 9 flows out from the inner hub 9 through the flow path 21 and the through hole 22.
- the liquid flowing out from the inner hub 9 passes through the main body 2 to the hollow portion of the outer needle 7 and is administered into the patient's body.
- the indwelling needle device 1B when there is air in the indwelling needle device 1B during administration of a drug solution or the like, the air enters the blood vessel together with the drug solution or the like. For this reason, prior to puncturing, an operation called priming is performed in which the indwelling needle device 1B is preliminarily filled with a liquid such as physiological saline or nutrient.
- FIG. 16 shows an enlarged sectional view of the vicinity of the inner hub 9 in FIG.
- FIG. 16 shows a cross section in the through direction of the through hole 22 of the inner hub 9.
- FIG. 17 is an enlarged cross-sectional view of the vicinity of the inner hub 9 in a direction orthogonal to the cross-sectional direction of FIG. That is, FIG. 17 shows a cross section in the radial direction of the through hole 22 of the inner hub 9.
- FIG. 18 shows an enlarged perspective view of the inner hub 9.
- Priming operation is performed with the inner needle 8 protruding from the outer needle 7 as shown in FIG.
- a liquid such as physiological saline is supplied from the tube 10 side toward the inner hub 9 (in the direction of arrow b).
- the liquid supplied to the inner hub 9 flows into the through hole 22 through the flow path 21.
- a part of the liquid that has flowed into the through hole 22 flows toward the outer peripheral surface side of the inner hub 9, that is, toward the opening side of both ends of the through hole 22 (in the direction of arrow c).
- the liquid that has flowed in the direction of arrow c passes between the outer peripheral surface of the inner hub 9 and the inner peripheral surface of the outer hub 5 and travels toward the tip 26 side of the inner hub 9.
- FIG. 18 shows an enlarged perspective view of the inner hub 9.
- the outer peripheral surface 23 of the inner hub 9 includes a concave portion 23a in which the outer peripheral surface 23 is recessed, and the outer peripheral surface 23 is formed with irregularities. Further, a protrusion 25 protruding from the recess 23 a is formed on the end 26 side of the inner hub 9 of the through hole 22.
- the recess 23a is formed by recessing the outer peripheral surface 23. For this reason, as shown in FIG. 16, a space 30 is formed between the recess 23 a and the inner peripheral surface of the outer hub 5.
- the space 30 shown in FIG. 16 corresponds to a portion between the protrusion 25 and the tip 26 of the inner hub 9 in the recess 23a of the inner hub 9 shown in FIG.
- the protrusion 25 protruding from the recess 23a in FIG. 18 is also illustrated in the sectional view of FIG. In FIG. 16, the surface of the protrusion 25 is close to the inner peripheral surface of the outer hub 5, but is not completely in close contact. For this reason, a gap 31 b is formed between the surface of the protrusion 25 and the inner peripheral surface of the outer hub 5.
- the liquid flowing out of the through hole 22 moves toward the tip 26 side of the inner hub 9 while flowing through the gap 31b (FIG. 16), the space 30 (FIG. 16), and the gap 32 (FIG. 17).
- FIG. 18 when the projection 25 is viewed in plan, the wall surface 25 a of the projection 25 faces the opening of the through hole 22. That is, the wall surface 25 a constitutes a part of the inner peripheral surface of the through hole 22. For this reason, when the liquid flows out from the through hole 22 toward the tip 26 side of the inner hub 9, the flow of the liquid is restricted by the wall surface 25 a of the protrusion 25, and a flow (arrows s, t) that is divided on both sides of the protrusion 25 is generated.
- the flow in the direction of the arrow s mainly travels through the space 30 (FIG. 16) toward the tip 26 side of the inner hub 9, and the flow in the direction of the arrow t wraps around the portion of the outer peripheral surface 23 where the recess 23a is not formed. , Flows into the gap 32 (FIG. 17).
- the liquid flowing out of the through hole 22 proceeds in the axial direction of the inner hub 9 toward the tip 26 side of the inner hub 9 as a whole.
- the flow proceeding in the circumferential direction of the inner hub 9 is also promoted.
- the liquid that has flowed to the tip 26 of the inner hub 9 further moves into the outer needle 7.
- the vicinity of the tip 26 of the inner hub 9 and the inner peripheral surface of the outer hub 5 are not completely in close contact with each other, and a gap 33 is formed between them.
- a gap 34 is also formed between the hole of the outer hub 5 and the inner needle 8.
- a gap 35 is also formed between the inner peripheral surface of the outer needle 7 and the outer peripheral surface of the inner needle 8.
- the liquid flowing toward the tip 26 of the inner hub 9 flows out from the tip of the outer needle 7 (arrow h) through the gap 33, the gap 34, and the gap 35.
- the liquid traveling in the direction of the arrow d in FIG. 16 flows out from the tip of the inner needle 8 through the hollow portion of the inner needle 8 as indicated by the arrow i in FIG.
- the space and the gap between the through hole 22 and the tip of the inner needle 8 and the outer needle 7 are filled with liquid, and from these spaces and the gap, Air is exhausted.
- FIG. 19 shows a perspective view of an inner hub 200 according to a comparative example.
- a through hole 202 penetrating in the radial direction is formed in the outer peripheral surface 201 of the inner hub 200 having no irregularities.
- the concave portion 23a and the protrusion 25 are not formed unlike the inner hub 9 shown in FIG.
- the liquid from the through hole 202 flows out toward the tip 203 side of the inner hub 200.
- the liquid flow (arrow j) on the line connecting the through-hole 202 and the tip 203 is strong, and air is easily discharged together with this flow.
- the flow (arrow m) in the circumferential direction of the inner hub 200 is weak.
- the liquid becomes difficult to spread as the distance from the opening of the through hole 202 increases. Therefore, in the circumferential direction of the inner hub 200, bubbles are likely to stay in a portion far from the opening of the through hole 202.
- the opening of the through hole 22 is sandwiched between the recesses 23a.
- the recess 23 a serves as a groove for guiding the liquid flow in the circumferential direction of the inner hub 9. This also promotes the flow of liquid that proceeds in the circumferential direction of the inner hub 9.
- air can be reliably replaced with liquid by filling the liquid by the priming operation, and air bubbles can be prevented from staying on the outer peripheral surface of the inner hub 9.
- the shape of the protrusion 25 is not limited as long as it is arranged so as to guide the liquid flowing out from the opening of the through hole 22 toward the tip 26 side of the inner hub 9 in the circumferential direction of the inner hub 9.
- the shape is not limited.
- the side surfaces on both sides in the circumferential direction of the projection 25 are arranged in a substantially V shape, and the circumferential width of the projection 25 increases as it approaches the through hole 22. ing.
- the liquid immediately after flowing out from the opening of the through hole 22 can be guided in the circumferential direction of the inner hub 9 by the wall surface 25a of the projection 25, and the tip portion (on the tip 26 side of the projection 25 ( Since the portion C) has a sharp shape, it is possible to prevent bubbles from staying at the tip C of the protrusion 25.
- FIG. 20 is a perspective view of the inner hub 40 according to the second example of the second embodiment.
- the inner hub 40 shown in this figure is different from the inner hub 9 shown in FIG. In the inner hub 9 shown in FIG. 18, no gap is formed between the protrusion 25 and the opening of the through hole 22.
- a gap having a dimension d is formed between the protrusion 25 and the opening of the through hole 22.
- the dimension d is the dimension of the gap between the protrusion 25 and the opening of the through hole 22 on the central axis 18 of the inner hub 9 when the inner hub 9 is viewed in plan.
- the liquid flowing out from the opening of the through hole 22 is regulated by the wall surface 25a on the through hole 22 side of the protrusion 25 and is diverted in the circumferential direction. Promoted.
- the dimension d is desirably less than or equal to 1 ⁇ 2 of the shortest distance L2 between the opening of the through hole 22 and the tip 26 of the inner hub 9.
- the needle device according to the present invention can prevent air bubbles from staying on the outer peripheral surface of the inner hub, it is useful as, for example, a medical needle device used for transfusion or blood transfusion.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Public Health (AREA)
- Vascular Medicine (AREA)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
Abstract
Description
図1は、本発明の実施形態1に係る留置針装置1Aの外観斜視図である。図2は、図1に示した留置針装置1Aの長手方向の断面図である。図3は、図2に示した留置針装置1Aの先端側の拡大図である。図4は、図2の状態から内針8をシールド筒4に引き込んだ状態を示す断面図である。まず図1~図4を参照しながら、留置針装置1Aの基本的な構成について説明する。 (Embodiment 1)
FIG. 1 is an external perspective view of an
図12は、本発明の実施形態2に係る留置針装置1Bの外観斜視図である。図13は、図12に示した留置針装置1Bの長手方向の断面図である。図14は、図13に示した留置針装置1Bの先端側の拡大図である。図15は、図13の状態から内針8をシールド筒4に引き込んだ状態を示す断面図である。まず図12~図15を参照しながら、留置針装置1Bの基本的な構成について説明する。 (Embodiment 2)
FIG. 12 is an external perspective view of an
2 筒状の本体
3 針部
4 シールド筒
5 外ハブ
7 外針
8 内針
9,40,50,60 内ハブ
18 内ハブの中心軸
22 貫通孔
23,51,61 内ハブの外周面
23a,51a,61a 凹部
23b 仕切り面
25 突起
25a 突起の壁面
26,53,63 内ハブの先端 DESCRIPTION OF
Claims (13)
- 先端に針が取り付けられた内ハブと、
前記内ハブが収納されている筒状の本体とを備え、
前記内ハブは、
前記内ハブの径方向に貫通した貫通孔と、
前記内ハブの外周面に形成された凹部とを含んでおり、
前記内ハブの周方向において、前記貫通孔の開口と前記凹部とがつながっていることを特徴とする針装置。 An inner hub with a needle attached to the tip;
A cylindrical main body in which the inner hub is housed,
The inner hub is
A through hole penetrating in the radial direction of the inner hub;
Including a recess formed in the outer peripheral surface of the inner hub,
In the circumferential direction of the inner hub, the opening of the through hole and the concave portion are connected to each other. - 前記凹部は、前記貫通孔の開口から流出した液体を前記内ハブの周方向に導くように配置されている請求項1に記載の針装置。 The needle device according to claim 1, wherein the concave portion is arranged so as to guide the liquid flowing out from the opening of the through hole in a circumferential direction of the inner hub.
- 前記内ハブの周方向において、前記貫通孔の開口は前記凹部に挟まれている請求項1又は2に記載の針装置。 The needle device according to claim 1 or 2, wherein an opening of the through hole is sandwiched between the recesses in a circumferential direction of the inner hub.
- 前記凹部は、仕切り面を境に分割されており、かつ前記凹部内に、その深さが、前記貫通孔の開口側から前記仕切り面に近づくにつれて浅くなっている部分がある請求項1~3のいずれかに記載の針装置。 The recessed portion is divided at a partition surface, and a portion of the recessed portion has a depth that becomes shallower from the opening side of the through hole toward the partition surface. The needle device according to any one of the above.
- 前記凹部は、前記内ハブの軸方向に延びた部分を含んでいる請求項1~4のいずれかに記載の針装置。 The needle device according to any one of claims 1 to 4, wherein the concave portion includes a portion extending in an axial direction of the inner hub.
- 前記内ハブの軸方向において、前記凹部の幅は、前記貫通孔の開口の長さの1/2以下である請求項1~5のいずれかに記載の針装置。 The needle device according to any one of claims 1 to 5, wherein in the axial direction of the inner hub, the width of the concave portion is ½ or less of the length of the opening of the through hole.
- 先端に針が取り付けられた内ハブと、
前記内ハブが収納されている筒状の本体とを備え、
前記内ハブは、
前記内ハブの径方向に貫通した貫通孔と、
前記貫通孔の開口と前記内ハブの先端との間に形成され、前記内ハブの外周面から突出した突起とを含むことを特徴とする針装置。 An inner hub with a needle attached to the tip;
A cylindrical main body in which the inner hub is housed,
The inner hub is
A through hole penetrating in the radial direction of the inner hub;
A needle device comprising: a protrusion formed between an opening of the through hole and a tip of the inner hub and protruding from an outer peripheral surface of the inner hub. - 前記内ハブは、前記内ハブの外周面を窪ませた凹部を備えており、前記突起は、前記凹部から突出している請求項7に記載の針装置。 The needle device according to claim 7, wherein the inner hub includes a concave portion in which an outer peripheral surface of the inner hub is recessed, and the protrusion protrudes from the concave portion.
- 前記突起は、前記貫通孔の開口から流出した液体を前記内ハブの周方向に導くように配置されている請求項7又は8に記載の針装置。 The needle device according to claim 7 or 8, wherein the protrusion is arranged to guide the liquid flowing out from the opening of the through hole in a circumferential direction of the inner hub.
- 前記突起を平面視したときに、前記突起の壁面と前記貫通孔の開口とが対向している請求項7~9のいずれかに記載の針装置。 The needle device according to any one of claims 7 to 9, wherein when the projection is viewed in plan, the wall surface of the projection and the opening of the through hole are opposed to each other.
- 前記内ハブの周方向において、前記貫通孔の開口は前記凹部に挟まれている請求項8~10のいずれかに記載の針装置。 The needle device according to any one of claims 8 to 10, wherein an opening of the through hole is sandwiched between the recesses in a circumferential direction of the inner hub.
- 前記内ハブを平面視したときに、前記内ハブの中心軸上において、前記突起と前記貫通孔の開口との間の隙間の寸法は、前記貫通孔の開口と前記内ハブの先端との間の最短距離の1/2以下である請求項7~11のいずれかに記載の針装置。 When the inner hub is viewed in plan, on the central axis of the inner hub, the size of the gap between the protrusion and the opening of the through hole is between the opening of the through hole and the tip of the inner hub. The needle device according to any one of claims 7 to 11, which is ½ or less of the shortest distance.
- 前記内ハブを平面視したときに、前記突起の両側の側面が略V字状に配置されており、前記突起の幅は前記貫通孔に向かうにつれて広がっている請求項7~12のいずれかに記載の針装置。 The side surface on both sides of the projection is arranged in a substantially V shape when the inner hub is viewed in plan, and the width of the projection is widened toward the through hole. The needle device described.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/508,244 US8911405B2 (en) | 2009-12-14 | 2010-11-18 | Needle device |
CN201080052586.6A CN102665798B (en) | 2009-12-14 | 2010-11-18 | Needle device |
EP10837401.8A EP2514452B1 (en) | 2009-12-14 | 2010-11-18 | Needle device |
KR1020127018130A KR101717318B1 (en) | 2009-12-14 | 2010-11-18 | Needle device |
HK13103015.0A HK1175726A1 (en) | 2009-12-14 | 2013-03-11 | Needle device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2009-283018 | 2009-12-14 | ||
JP2009283018A JP5637350B2 (en) | 2009-12-14 | 2009-12-14 | Needle device |
JP2009-283017 | 2009-12-14 | ||
JP2009283017A JP5532892B2 (en) | 2009-12-14 | 2009-12-14 | Needle device |
Publications (1)
Publication Number | Publication Date |
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WO2011074372A1 true WO2011074372A1 (en) | 2011-06-23 |
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PCT/JP2010/070603 WO2011074372A1 (en) | 2009-12-14 | 2010-11-18 | Needle device |
Country Status (6)
Country | Link |
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US (1) | US8911405B2 (en) |
EP (1) | EP2514452B1 (en) |
KR (1) | KR101717318B1 (en) |
CN (1) | CN102665798B (en) |
HK (1) | HK1175726A1 (en) |
WO (1) | WO2011074372A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104334225A (en) * | 2012-05-31 | 2015-02-04 | 株式会社Jms | Indwelling needle device |
EP2815782A4 (en) * | 2012-02-17 | 2015-10-21 | Jms Co Ltd | Indwelling needle device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5790972B2 (en) | 2011-06-07 | 2015-10-07 | 株式会社ジェイ・エム・エス | Indwelling needle device |
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JPH10258123A (en) * | 1997-01-17 | 1998-09-29 | Misawa Ika Kogyo Kk | Detention needle set |
JP2006297062A (en) | 2005-03-24 | 2006-11-02 | Jms Co Ltd | Indwelling needle device |
WO2007083770A1 (en) | 2006-01-20 | 2007-07-26 | Jms Co., Ltd. | Medical needle device |
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US5893844A (en) * | 1997-01-17 | 1999-04-13 | Misawa Medical Industry Co., Ltd. | Indwelling needle set |
JP4807017B2 (en) | 2005-09-20 | 2011-11-02 | トヨタ自動車株式会社 | Vehicle steering control device |
US8308691B2 (en) | 2006-11-03 | 2012-11-13 | B. Braun Melsungen Ag | Catheter assembly and components thereof |
-
2010
- 2010-11-18 CN CN201080052586.6A patent/CN102665798B/en not_active Expired - Fee Related
- 2010-11-18 WO PCT/JP2010/070603 patent/WO2011074372A1/en active Application Filing
- 2010-11-18 US US13/508,244 patent/US8911405B2/en not_active Expired - Fee Related
- 2010-11-18 EP EP10837401.8A patent/EP2514452B1/en active Active
- 2010-11-18 KR KR1020127018130A patent/KR101717318B1/en active IP Right Grant
-
2013
- 2013-03-11 HK HK13103015.0A patent/HK1175726A1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10258123A (en) * | 1997-01-17 | 1998-09-29 | Misawa Ika Kogyo Kk | Detention needle set |
JP2006297062A (en) | 2005-03-24 | 2006-11-02 | Jms Co Ltd | Indwelling needle device |
WO2007083770A1 (en) | 2006-01-20 | 2007-07-26 | Jms Co., Ltd. | Medical needle device |
Non-Patent Citations (1)
Title |
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See also references of EP2514452A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2815782A4 (en) * | 2012-02-17 | 2015-10-21 | Jms Co Ltd | Indwelling needle device |
CN104334225A (en) * | 2012-05-31 | 2015-02-04 | 株式会社Jms | Indwelling needle device |
Also Published As
Publication number | Publication date |
---|---|
EP2514452A1 (en) | 2012-10-24 |
CN102665798B (en) | 2014-05-07 |
CN102665798A (en) | 2012-09-12 |
EP2514452B1 (en) | 2014-09-03 |
US8911405B2 (en) | 2014-12-16 |
KR101717318B1 (en) | 2017-03-16 |
EP2514452A4 (en) | 2013-06-05 |
KR20120104332A (en) | 2012-09-20 |
US20120220943A1 (en) | 2012-08-30 |
HK1175726A1 (en) | 2013-07-12 |
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